Catalog Number:
401391
Object/Specimen Description:

These are 2-dimensional mounted specimens of a Jerusalem Artichoke plant. Despite its name, this plant is a sunflower. The stem is 0.1-0.5 cm wide. The leaves are green and ovate with slightly serrated edges and a pointed tip. The leaves measure 10-25 cm long. The flowers have yellow petals which measure 3.5-4cm long.

Specimen Count:
2
Collector:
N. Erwin
Locality:
US Mid Atlantic (PA, NJ, MD, DE, DC, VA, WV)
Collecting Date:
3 Sep 2013
Collecting Locality:
North America, United States, Pennsylvania, Philadelphia County
Upper Level Taxonomy:
Plantae, Equisetopsida, Magnoliidae, Asteranae, Asterales, Asteraceae

Dicots begin their lives as seeds nourished by two seed leaves (cotyledons). The leaves provide nutrients to the developing seed until it grows its first real leaves that can make food by photosynthesizing. Most flowering plants are dicots, which includes many of the foods humans enjoy: grapes, squash, soybeans, strawberries, tomatoes, potatoes, peanuts, etc. You can tell a dicot by its characteristic branching leaf veins. Not only do dicots feed us, they also cloth us; cotton, linen, and hemp are dicots. Because dicots and conifers are the only plants able to form wood, they are central to our building industry. Wood is extra plant tissue for transporting water and nutrients (vascular tissue). It forms when cells specialized for growth (meristems) continue to divide. The result is that the tree grows, adding to its width and height. Maples, oaks, and hickories, all sources of wood, are dicots.